蒙脱土有机化改性的研究进展

Recent Progress in Organic Modification of Montmorillonite

蒙脱土的结构特殊,具有可分散性、膨胀性和阳离子交换性等,应用广泛.但蒙脱土具有的亲水疏油性不利于其在有机相中分散,因此当蒙脱土应用于有机体系时必须对其进行有机化改性.有机改性剂的选择是蒙脱土有机化过程的关键.针对长链烷基季铵盐、阴离子表面活性剂、非离子表面活性剂、偶联剂以及有机胺和有机酸等改性剂在蒙脱土有机化改性方面的研究进展进行了综述,对于进一步深化蒙脱土资源的开发与应用将具有重要的意义.

Montmorillonite has wide application because of its special structure and having the dispersibility, dilatability and cation exchange. But montmorillonite is poor dispersion in the organic phase for its hydrophilic oleophobic property, so montmorillonite used in organic system must be disposed with the organic modification. The choice of organic modifier is the key to the process of montmorillonite organic modification. The research progress of modifying agent such as long chain alkyl quaternary ammonium salt, anionic surfactant, nonionic surfactant, coupling agent and organic amine and organic acids in organic modification of montmorillonite was summarized, which will have important significance to further montmorillonite resources development and application.